Than barnes



(No Model.)

J. KENYON, J. BARNES 8v R. W. KENYON. VISE.

N0. 365, 186. Patented June 21,188

(9 I iillllllli I 1| llllmil W v W UNITED STATES.

PATENT OFFICE.

JANIES KENYON, JONATHAN BARNES, AND RICHARD \VALTON KENYON, OF ACORINGTON, COUNTY OF LANCASTER, ENGLAND.

VISE.

SPECIFICATION forming part of Letters Patent No. 365,186, dated June 21, 1887.

Application tiled September 13, 1886. Serial No. 213,427. (No model.) Patented in England May 17, 1886, No. 6,617.

To aZZ whom, it may concern:

Beitknown that we, J AMES KENYoN, J ONA- THAN BARNES, and RICHARD WALTON KEN- 'YON, of Accriugton, Lancaster county, England, have invented certain new and useful Improvementsin Vises, (patented in England on the 17th day ofMay,1SS6,No. 6,617,) ofwhich the following is a specification.

At the present time there are known in the artnumerous vises with sliding jaws having ratchet-teeth thereon to engage locking devices operatcd by rotary shafts or screws, so that the jaws may be instantly released in or der to be moved by hand, and it is to this class of Vises that our invention relates.

In practice it is found desirable to tighten the jaws by means of a screw after the locking devices are broughtinto play.

()nr invention relates to an improved construction and arrangement under which this mode of action is secured.

In the accompanying drawings, Figure 1 is a longitudinal vertical section of our vise. Fig. 2 is a rear end view of the same. Fig. 8 is a front view of the upper parts. Fig. 4 is an end view of the cam.

Referring to the drawings, A represents the movable jaw, having a horizontal arm, which slides through an openingin the stationary jaw B. The jaw 13 contains a fixed rack, C, over lying the arm of the movable jaw to engage a small rack-plate, D, lying loosely in said arm, and sustained by a cam, E, on which it rests, and by which it is raised into action when the vise is to be locked. The cam is fastened, as shown in Figs. 1 and 2, on a horizontal rock shaft or spindle, F, extending through' the movable jaw from front to rear and capable of sliding endwise therein to a limited extent. An encircling spring, K, bearing against. a shoulder on the spindle, and another on the sliding jaw, urges the spindle rearward, anda pin, L, projecting from the spindle in position to encounter a shoulder, M, limits the rotary motion of the spindle to a half-revolution. The forward end of the spindle is formed with a screw-thread, f, and provided with a nut, G, which is connected with the spindle with friction devices of any appropriate character which will tend to revolve the spindle with the nut. In the form shown in the drawings the friction devices consist of a second nut, H, mounted on the threaded portion of the spindle and connected with thefirst nut byaloose pin, I, compelling the two to turn together, and of a strong spiral spring, II, seated be tween the nuts and urging them apart, so that they bind upon the thread. Ahandle or lever, G, is applied to the main nut G as a means of turning the same, and a head, J, is secured to the end of the spindle to prevent the escape of the nuts, and, as shown in the drawings, the contiguous faces of the nut H and the head T are provided with lugs 00, adapted to engage and to impart positive motion to the spindle in the event of its binding until the nuts are turned outward against the head.

The operation is as follows: \Vhen the operator, grasping the lever or handle G, turns the nut G to the right, the friction devices cause the shaft to turn therewith until the cam E lifts the plate D into engagement with the rack on the stationary jaw, the effectof which is to prevent the movable jaw from opening, the further rotation of the spindle being prevented by its stoppin, or by the friction of the eccentric against the plate I). The nut G, overcoming the resistance of the friction devices, turns upon the spindle, and, being moved bythe screw-th read along the spindle, it urges the movablejaw toward its companion with great force. Vhen the nut G is turned in the opposite direction, it revolves around the screw and loosens the jaws, after which the friction devices turn the spindle with the nut, causing the cam E to lower the plate D out of engagement with the overlying rack. The effect of this action is to entirely unlock the movable jaw, so that it may be moved inward or outward at will by hand.

Ve are aware that a screw has been provided with a wedge acting to lift the block into position tolock thejaw ofa vise and there after to urge the block endwise for the purpose of closing the jaw, and this we do not claim; but we believe ourselves to be the first to combine with a closing nut mounted on a rotary shaft or spindle friction devices through which the nut may impart a rotary motion to the shaft and cause the latter to actuate the to adjust the movable rack, the nut mounted devices for locking the jaws, and it will be manifest to the skilled mechanic that the construction herein described and shown may be varied in the form and arrangement of the details without changing its mode of action or passing beyond the limits of our invention.

Having thus described our invention, what we claim is- 1. In a vise, the stationary jaw and its rack, in combination with thesliding jaw, the movable rack-plate therein, the longitudinal shaft provided with a screw-thread and with a cam on the threaded portion of said shaft, and a friction device connecting said nut with the shaft, substantially as described, whereby the nut is enabled to turn the shaft for the purpose of engaging the racks, and thereafter permitted to turn upon the shaft for the purpose of closing the jaws.

2. In a vise ofthe type herein described, the combination of the jaws, a locking mechanism, substantially as described, to hold the jaws, a rotatable shaft to operate said locking mechanism, provided with ascrew-thread, and a nut to tighten the jaws mounted on said shaft and connected therewith by a friction device, substantially as described, whereby the nut is enabled to serve the'double function of turning the shaft to operate the locking device and of turning upon the shaft to tighten the jaws.

3. In a vise, and in combination with the rock'shaft for locking and unlocking the jaws, the nut mounted on a threaded portion of said shaft. to close the jaws, the second nut, also mounted on saidshaft, and the intermediate spring, whereby the nuts are caused to bind upon the shaft, as and scribed.

4. In a vise, and in combination with the rock-shaft for operating the locking device, the two nuts mounted on a threaded portion of said shaft, the.,intermediate spring, and the head or enlargement at the end of the shaft, whereby it may be given a positive rotation.

5. The combination of the stationary jaw and its rack, the sliding jawand its adjustable racl -plate, the rock-shaft .mounted in the movable jaw, the cam on said shaft, the spring is, the two nuts, and the spring between the nuts, said parts constructed-and combined for joint operation, substantially as described.

In testimony whereof we have signed our for the purpose denames to this specification in the presence of 55 two subscribing witnesses.

JAMES KENYON. JONATHAN BARNES. RICHARD WALTON KENYON. 

